Generally, I consider a backup on the same hard drive to be a false sense of security. Hard drives fail, and having both the primary and the backup copy on the same drive is a recipe for problems. So I removed the click-and-forget button that made it easy to get this false security.

You're right, there are a range of backup options. And I think it's up to each person to decide how much their data is worth to them. But I think it's important that each person make that decision themselves, rather than having one bad choice artificially privileged over the others.

I somewhat walk the walk... I make a nightly bootable backup to a local hard drive, and upload my important files nightly to a server three time zones away. Stuff like game files are kept in version control on the server, while Ren'Py itself is in version control on launchpad.

Supporting creators since 2004(When was the last time you backed up your game?)

I suggest you stick to low tech backups... Burn copies on a re-writtable DVD or USB...

Make sure you have 2 copies either on re-writtable DVD or USB and update regularly then store on two different locations... one in home and one in office... after back-up... check data for consistency...

I lost several projects due to carelessness and data corruption... don't repeat my mistakes...

Obviously, it's the best way to save your important data from being lost.

Personally I use a high-capacity USB flash drive and burn things on a CD-RW/DVD-RW when there's only a need. I would also reccomend to store things on a personal ftp if you have a nice connection. You will also gain the ability to get your data from the net on almost every PC with internet connection.